• 제목/요약/키워드: Xiphophorus hellerii

검색결과 3건 처리시간 0.021초

송사리과 Swordtail (Xiphophorus hellerii)의 난모세포 성숙과정에 관한 미세구조 연구 (Ultrastructural Study on the Oocyte Maturation of Swordtail (Xiphophorus hellerii))

  • 황우섭;김완종;류동석
    • Applied Microscopy
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    • 제28권3호
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    • pp.263-271
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    • 1998
  • Oocyte maturation of the swordtail (Kiphophorus hellerii) was investigated by light and electron microscopy. In the ovary of the swordtail, various staged oocytes were observed, Mature oocytes were located in ovarian cortex, meanwhile immature ones were positioned in ovarian medulla. The oocyte was surrounded by several structures or cells such as chorion, follicle cells, follicular theaca and ovarian epithelium, respectively, from the inside toward outside. Growing and maturing oocytes healed numerous microvilli which interconnected the oocyte and the follicle cells to communicate each other. The mature oocyte had the electron dense chorion which appeared to be ultrastructure of two layers and contained pore canals. Oocyte maturation was characterized by not only the enlarged cell size and well differentiated cell organelles, brit also the increases of fat droplets, pinocytotic vesicles and yolk granules.

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